}
    }

    /**
     * Returns the files this task will check
     */
    @InputFiles
    @SkipWhenEmpty
    public FileCollection getFiles() {
        return getSources().get()
            .stream()
            .map(sourceTree -> sourceTree.matching(filesFilter))
            .reduce(FileTree::plus)
            .orElse(projectLayout.files().getAsFileTree());
    }

    @TaskAction

            }
        }
        return tree == null ? null : tree.matching(patternFilterable -> patternFilterable.include("**/*-NOTICE.txt"));
    }

    @InputFiles
    @Optional
    public FileCollection getSources() {
        return sources;
    }

    public static void appendFile(File file, String name, String type, StringBuilder output) {
        String text = FileUtils.read(file, "UTF-8");

        message.addSource(source);

        assertEquals(1, message.getSources().size());
        assertEquals("Test Document", message.getSources().get(0).getTitle());
    }

    @Test
    public void test_addSourceWithNullSources() {
        final ChatMessage message = new ChatMessage();
        message.setSources(null);

        final ChatSource source = new ChatSource();

                        },
                        {
                            "type": "org.gradle.api.tasks.compile.JavaCompile",
                            "member": "Method org.gradle.api.tasks.compile.JavaCompile.getSources()",
                            "acceptation": "Deprecated method removed",
                            "changes": [
                                "Method has been removed"
                            ]

                        },
                        {
                            "type": "org.gradle.api.tasks.compile.JavaCompile",
                            "member": "Method org.gradle.api.tasks.compile.JavaCompile.getSources()",
                            "acceptation": "Deprecated method removed",
                            "changes": [
                                "Method has been removed"
                            ]

        return project.getTasks()
            .register(
                FILEPERMISSIONS_TASK_NAME,
                FilePermissionsTask.class,
                filePermissionsTask -> filePermissionsTask.getSources()
                    .addAll(
                        providerFactory.provider(
                            () -> GradleUtils.getJavaSourceSets(project).stream().map(s -> s.getAllSource()).collect(Collectors.toList())

     *
     * @return The hint about the source of the problem or an empty string if unknown, never {@code null}.
     */
    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *
     * @return The one-based index of the line containing the problem or a non-positive value if unknown.
     */

     *
     * @return The hint about the source of the problem or an empty string if unknown, never {@code null}.
     */
    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *
     * @return The one-based index of the line containing the problem or a non-positive value if unknown.
     */

        collector.add(null, "PROBLEM3", -1, -1, null);

        assertEquals("", collector.getProblems().get(0).getSource());
        assertEquals("SOURCE_PROBLEM2", collector.getProblems().get(1).getSource());
        assertEquals("SOURCE_PROBLEM3", collector.getProblems().get(2).getSource());
    }

    @Override
    public String getLocation() {
        StringBuilder buffer = new StringBuilder(256);

        if (!getSource().isEmpty()) {
            if (!buffer.isEmpty()) {
                buffer.append(", ");
            }
            buffer.append(getSource());
        }

        if (getLineNumber() > 0) {
            if (!buffer.isEmpty()) {
                buffer.append(", ");
            }